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- [42] MEASUREMENT OF MILK TEMPERATURE AS AN AID TO ESTRUS DETECTION IN DAIRY-CATTLE JOURNAL OF AGRICULTURAL SCIENCE, 1978, 91 (DEC): : 593 - 597
- [43] APPROVED ... DAIRY-CATTLE SPRAYS NORTH DAKOTA COOPERATIVE EXTENSION SERVICE CIRCULAR, 1984, (NE-33): : 1 - 6